DALLAS--(BUSINESS WIRE)--AT&T Inc. (NYSE:T) announced today that the company’s third-quarter 2015 results will be released after the New York Stock Exchange closes on Thursday, October 22, 2015. At 4:30 p.m. ET the same day, AT&T will host a conference call to discuss the results. The company’s earnings release, Investor Briefing and related materials will be available at AT&T Investor Relations before the conference call begins. The company will broadcast a live webcast of the call